ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Questioning the electrical norms
by HotLine1 - 03/04/21 12:35 PM
Lock-down Thread
by gfretwell - 03/03/21 12:38 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (Scott35), 23 guests, and 19 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
GFCI's and Aluminum Wire #179761 07/30/08 05:01 PM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline OP
Cat Servant
It finally happened .... I came across some aluminum wire in a trailer. Now the fun begins.

For those who have not worked on trailers, they are typically glued together. As a result, opening the walls really isn't an option, and re-pulling the wires is problematic - unless you want to demolish the trailer, and start over!

So, I'm doing the next-best thing ... replacing what wire I can find, and using Co/Alr rated devices. Here's where the trouble begins ....

My local parts houses scratch their heads at the request for rated GFCI receptacles. Leviton assures me that there is no such thing - at least, in their inventory.

Does anyone have a source for Co/Alr rated GFCI's?

(FWIW, this trailer was made before GFCI's were required. While I have 'normal' device boxes, I really want to add GFCI's to the kitchen and bathroom).

Work Gear for Electricians and the Trades
Re: GFCI's and Aluminum Wire [Re: renosteinke] #179762 07/30/08 05:55 PM
Joined: Dec 2000
Posts: 4,287
electure Offline
Would it be possible to use a pigtail of copper (with approved splicing methods)?

Re: GFCI's and Aluminum Wire [Re: renosteinke] #179763 07/30/08 05:58 PM
Joined: May 2003
Posts: 1,155
dougwells Offline
How about the dead front (faceless) gfci devices mounted at the panel location for those circuits. Run copper from the Panel to gfci device and an approved method for pig tailing Al to Cu at the GFCI device near panel

Re: GFCI's and Aluminum Wire [Re: dougwells] #179766 07/30/08 06:49 PM
Joined: Oct 2006
Posts: 745
EV607797 Offline
Wow, that is a really good one. I can honestly say that I've never encountered this situation. I'm in agreement that finding CO/ALR rated GFI receptacles is likely impossible. I can only imagine an approved method of pigtail splicing and more than extension box.


"But the guy at Home Depot said it would work."
Re: GFCI's and Aluminum Wire [Re: EV607797] #179767 07/30/08 07:21 PM
Joined: Sep 2002
Posts: 908
NORCAL Offline
In chat you said that the panel is Zinsco, is the panel going to be replaced? If so, how about a GFCI circuit breaker????

Re: GFCI's and Aluminum Wire [Re: NORCAL] #179771 07/30/08 08:48 PM
Joined: Jul 2004
Posts: 9,571
gfretwell Offline
I guess it comes down to how many Alumiconns you can get in a box with a GFCI. I see a 1900 box and a ring in your future. wink

Greg Fretwell
Re: GFCI's and Aluminum Wire [Re: gfretwell] #179773 07/30/08 08:56 PM
Joined: Jul 2004
Posts: 9,571
gfretwell Offline
I was half kidding in that last post but if you gave them a quad with a GFCI and a CO/ALr receptacle you would only have one pair of splices. Splice L/N into the GFCI and use copper jumpers between the receptacles.

Greg Fretwell
Re: GFCI's and Aluminum Wire [Re: NORCAL] #179775 07/30/08 09:01 PM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline OP
Cat Servant
Alas, try as I might, I can find nothing wrong with the panel ... plus, with it installed indoors, recessed into the wall, AND it being a trailer (nearly impossible to patch) ... I'm not about to change it. Zinsco lives on ...

Today was productive, in that I now have a very good idea as to what is wrong with the trailer. This, my friends, is why you need to have a megger!

Anyway, I need only replace two sections of wire. Naturally, the least accessible one is guarded by a 35 pound black widow spider ... at least, that's how it looked while I was under the trailer. I just PRAY the brick I hit it with didn't just make it mad! laugh

So, it looks like I'll be doing a fair amount of pigtailing. Apart from the GFCI's, I'll need to do this at the light fixtures.
The King "AlumiConn" connectors look to cost in the neighborhood of $3 each. That's ten bucks' of connectors in a box. I suspect I'll be 'daisy chaining' the $2.60 Cu/Alr devices, rather than my usual pigtail method.
T&B, who had assured me at "counter day" that I would have no trouble getting their rated "Marrette" connectors (about 40 cents each) is proving elusive, now that I actually want some.

Re: GFCI's and Aluminum Wire [Re: renosteinke] #179778 07/31/08 06:13 AM
Joined: Feb 2003
Posts: 361
mbhydro Offline
Have you tried looking at the "Big Box" stores for the cu/al Marette's, if your wholesaler doesn't have them?

Where I am here in Canada they are on the shelves with the regular ones.

Re: GFCI's and Aluminum Wire [Re: mbhydro] #179782 07/31/08 09:59 AM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline OP
Cat Servant
Thanks, MB .... but, alas, they seem to be a 'marketed in Canada only" product. I'm still looking.

Leviton, P&S, and Hubbell have all informed me that they have no GFCI's rated for aluminum wire.

Page 1 of 2 1 2


2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman


Member Spotlight
Posts: 46
Joined: May 2007
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
275,741 Are you busy
209,655 Re: Forum
197,002 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3